牌号

   C

  Mn

 S

  P

  Cr

  Ni

  CU

65Mn

0.62-0.70

0.90-1.20

 0.035

 0.035

 0.25

0.30

 0.25

60Si2Mn

0.56-0.6

0.6-0.90

 0.035

 0.035

 0.35

0.35

 0.25

SK4

0.95-1.04

0.40

 0.030

 0.035

 0.25

0.20

 0.30

SUP7

0.56-0.64

0.15-2.00

 0.035

 0.035

 0.35

0.35

 0.25